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We specialize in manufacturing self-lubricating, maintenance-free bearings designed to meet your specific needs.

Oilless Bushings: Your Guide to Choosing the Right Supplier

Oilless bushings, often referred to as dry bushings, are self-lubricating bearings that operate without the need for oil or grease. They are commonly used in various industries, including automotive, electrical, and mechanical systems, due to their durability, low friction, and high performance.

When selecting an oilless bushing supplier, it’s crucial to consider several factors to ensure you get the best product for your requirements. Here’s a guide to help you choose:

1. Quality Assurance

The quality of oilless bushings can differ greatly among suppliers. Choose a supplier known for producing high-quality, reliable products. Look for companies that use premium materials and have stringent quality control procedures to ensure consistency and durability.

2. Proven Experience

Experience is key when selecting an oilless bushing supplier. Look for a supplier with a track record of success, having been in business for several years and producing consistently high-quality products.

3. Customization Options

Depending on your specific application, you may need customized oilless bushings. Select a supplier that offers customization services and can manufacture bushings according to your exact specifications.

4. Cost Considerations

While price is an important factor, it’s essential to balance it with other considerations like quality, experience, and customization. The cheapest option may not always provide the best value, so choose wisely.

5. Lead Time

Ensure your supplier can meet your deadlines by offering short lead times. Timely delivery is critical to avoid delays in your production process.

6. Technical Support

Choose a supplier that provides comprehensive technical support. A knowledgeable team can assist with product selection, troubleshooting, and any questions related to your specific application.

In Summary

Choosing the right oilless bushing supplier is crucial for ensuring high performance and reliability in your applications. By considering factors such as product quality, supplier experience, customization, pricing, lead time, and technical support, you can find the ideal partner for your needs.

What Are Oil-Free Bearings and How Do They Work?

Oil-free bearings are a type of sliding bearing designed to function without the need for traditional lubricants like oil or grease. They are often made from self-lubricating materials such as PTFE, bronze, and graphite, which allow the bearings to reduce friction and maintain high performance without additional lubrication.

These bearings are ideal for vertical applications and can help reduce the time and cost associated with manufacturing and assembling bearing housings. They are used in various industries, including automotive, industrial machinery, and marine systems.

There are several types of sliding bearings based on the lubrication method, including oil-lubricated, grease-lubricated, water-lubricated, gas-lubricated, and solid-lubricated bearings. Oil-free bearings fall under the category of solid-lubricated bearings, where lubrication is provided by materials like graphite or PTFE embedded in the bearing surface.

Types of Oil-Free Bearings

1. Graphite-Plugged Bearings: These bearings are typically made from materials such as copper alloy, carbon steel, and polyacetal resin. They are filled with solid lubrication materials like graphite or PTFE, which transfer to the friction surface during operation to reduce wear and friction.
2. Inlaid Solid Lubrication Bearings: A prime example is the JDB series oil-free bearing, which features a metal substrate like brass, tin bronze, or aluminum bronze. These bearings are embedded with solid lubricants such as graphite or molybdenum disulfide, which provide lubrication in the absence of oil, reducing friction and extending the life of the bearing.
3. Self-Lubricating Bearings: These bearings are made from special self-lubricating materials that eliminate the need for external lubrication. They are often used in applications involving heavy loads and high temperatures, and are suitable for a variety of industries, including manufacturing, marine, and power generation.
4. Flanged and Straight Bushings: These oil-free bushings are available in a range of sizes and are made from solid aluminum bronze, often with self-lubricating graphite embedded to reduce friction. They are ideal for heavy-duty applications and offer long-lasting performance without the need for constant maintenance.

Applications of Oil-Free Bearings

Oil-free bearings are widely used in various industrial applications, such as:

• Continuous Casting Machines
• Rolling Mills
• Injection Molding Machines
• Paper Machines
• Shipbuilding
• Machine Tools

These bearings are designed to handle high loads, resist corrosion, and operate in hostile environments, making them suitable for demanding applications.

Conclusion

Oil-free bearings, including self-lubricating and graphite-plugged varieties, offer a reliable and maintenance-free solution for many industries. By selecting a trusted supplier with experience in producing high-quality oilless bushings, you can ensure that your equipment runs smoothly, efficiently, and without the need for regular lubrication.

Whether you need standard or customized solutions, our team is here to help you find the right oilless bushings for your specific requirements. Explore our range of oil-free bearings and experience the benefits of reduced maintenance and improved performance today!

GRAPHITE BRONZE BUSHING ORDER FROM CHINA

Plug graphite bearings are primarily used in applications that need continual lubrication in hard to reach areas.

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For detailed Oilless Bushes specifications, check with the electronic catalog

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Aluminum Bronze Oilless Bearings: A Corrosion-Resistant Solution for Marine Applications

Aluminum bronze oilless bearings, particularly those made from CuAl10Ni5Fe4 (2.0966) or its equivalent C63000, are highly valued in marine and industrial applications due to their exceptional corrosion resistance, high strength, and self-lubricating properties. These bearings are specifically designed to withstand harsh environments, such as seawater, where corrosion and wear are significant challenges. Below is a detailed overview of aluminum bronze oilless bearings, their properties, advantages, and applications.

Composition and Properties of Aluminum Bronze

Composition

• Primary Alloying Elements: Copper (Cu), aluminum (Al), nickel (Ni), and iron (Fe).
• Typical Composition:
  • Aluminum: 9–14%
  • Nickel: 4–6%
  • Iron: 3–5%
  • Copper: Balance

Key Properties

1. Corrosion Resistance:
   • Excellent resistance to seawater, brackish water, and other corrosive environments.
   • Forms a passive protective film (brown oxide layer) that heals quickly if damaged.
2. High Strength and Hardness:
   • Superior mechanical properties compared to other bronze alloys.
   • Can be further strengthened through heat treatment (quenching and tempering).
3. Wear Resistance:
   • Ideal for high-load and high-wear applications.
4. Self-Lubricating:
   • Embedded solid lubricants (e.g., graphite) reduce friction and eliminate the need for external lubrication.
5. High-Temperature Resistance:
   • Maintains performance in high-temperature environments.
6. Low Maintenance:
   • Self-lubricating properties reduce the need for frequent maintenance.

Advantages of Aluminum Bronze Oilless Bearings

1. Exceptional Corrosion Resistance:
   • Resists pitting, crevice corrosion, and erosion-corrosion in seawater and other aggressive environments.
2. High Load Capacity:
   • Suitable for heavy-load applications, such as marine propulsion systems and industrial machinery.
3. Self-Lubricating and Maintenance-Free:
   • Embedded graphite or other solid lubricants ensure smooth operation without external lubrication.
4. Long Service Life:
   • Durable and wear-resistant, reducing the need for frequent replacements.
5. Versatility:
   • Can be used in a wide range of applications, from marine to industrial and chemical processing.

Applications of Aluminum Bronze Oilless Bearings

Marine Industry

1. Propeller Systems:
   • Used in propeller shafts and bearings due to their resistance to seawater corrosion.
2. Seawater Piping Systems:
   • Ideal for pumps, valves, flanges, and pipe fittings in desalination plants and offshore platforms.
3. Offshore Platforms:
   • Used in equipment exposed to seawater, such as winches, cranes, and drilling systems.

Industrial Applications

1. Desalination Plants:
   • Components like pumps, valves, and bearings in seawater desalination systems.
2. Chemical Processing:
   • Equipment exposed to corrosive chemicals and high temperatures.
3. Power Generation:
   • Bearings and components in turbines and cooling systems.
4. Heavy Machinery:
   • High-load applications such as crushers, conveyors, and presses.

Other Applications

1. Plant Components:
   • Pumps, valves, and fittings in industrial plants near coastal areas.
2. Cooling Systems:
   • Bearings and components in seawater cooling systems for industrial plants.

Why Aluminum Bronze is Ideal for Marine Environments

1. Seawater Resistance:
   • The high aluminum content forms a protective oxide layer that resists corrosion from dissolved salts in seawater.
2. Erosion and Cavitation Resistance:
   • Withstands the abrasive effects of ocean currents and cavitation in pumps and propellers.
3. Low Maintenance:
   • Self-lubricating properties eliminate the need for frequent lubrication, reducing downtime and maintenance costs.
4. Aesthetic Durability:
   • The brown oxide layer, while not aesthetically pleasing, provides long-term protection and should not be removed.

Technical Specifications

• Material Standards:
  • CuAl10Ni5Fe4 (2.0966): European standard.
  • C63000: UNS equivalent.
• Mechanical Properties:
  • Tensile Strength: 600–900 MPa
  • Hardness: 160–220 HB
  • Wear Resistance: Excellent
• Temperature Range:
  • Operating Temperature: Up to 400°C (752°F)

Conclusion

Aluminum bronze oilless bearings, such as those made from CuAl10Ni5Fe4 or C63000, are a superior choice for marine and industrial applications requiring corrosion resistance, high strength, and low maintenance. Their self-lubricating properties, combined with exceptional wear and corrosion resistance, make them ideal for harsh environments like seawater, desalination plants, and offshore platforms. By choosing aluminum bronze oilless bearings, industries can achieve long-lasting performance, reduced maintenance costs, and improved operational efficiency. These bearings are a testament to the importance of using high-quality materials to overcome the challenges posed by corrosive and high-load environments.

Maintenance-free bearing and guide bushes, bronze with solid lubricant

Bushing Size

Base Material: Special Brass (SO#50SP2)Self-lubricating Lubricant: Graphite

Oilless Bearings: The Future of Bearing Technology

As industries continue to evolve and innovate, so does the technology behind the machines that drive them. Bearings are an essential component of many industrial machines, providing support and reducing friction between moving parts. Traditional bearings rely on lubrication to reduce friction, but with advancements in material science, a new generation of bearings has emerged: oilless bearings.

What are Oilless Bearings?

Oilless bearings, also known as self-lubricating bearings, are a type of bearing that does not require external lubrication to operate smoothly. Instead, they are made of materials that inherently reduce friction, eliminating the need for additional lubrication. This makes them an ideal choice for machines that operate in harsh environments or where lubrication is difficult or impossible.

Benefits of Oilless Bearings

Oilless bearings offer several advantages over traditional lubricated bearings, including:

1. Reduced Maintenance: Because oilless bearings do not require external lubrication, they require less maintenance than traditional bearings. This can save time and money over the lifespan of a machine.
2. Longer Lifespan: Oilless bearings are designed to last longer than traditional bearings, reducing the frequency of replacements and associated downtime.
3. Increased Durability: Oilless bearings are made of materials that are more durable than traditional bearing materials, allowing them to withstand higher loads and operate in harsher environments.
4. Environmentally Friendly: Oilless bearings eliminate the need for external lubrication, reducing the amount of oil and grease that can leak into the environment.

Applications of Oilless Bearings

Oilless bearings are used in a wide range of industrial applications, including:

1. Food and Beverage: Oilless bearings are commonly used in food and beverage processing equipment because they eliminate the risk of contamination from external lubricants.
2. Medical Equipment: Oilless bearings are ideal for medical equipment because they are self-lubricating and reduce the risk of contamination.
3. Aerospace: Oilless bearings are used in aerospace applications because they are lightweight and durable, making them ideal for high-performance applications.
4. Marine: Oilless bearings are commonly used in marine applications because they can withstand harsh marine environments without the need for external lubrication.

Oilless bearings are a game-changing technology that offers numerous advantages over traditional lubricated bearings. Their inherent friction-reducing properties, combined with increased durability and reduced maintenance, make them an ideal choice for a wide range of industrial applications. As industries continue to evolve, it’s clear that oilless bearings will play a crucial role in shaping the future of bearing technology.

Bronze Sliding Bearing With Solid Lubricant Insert and Flange Bushing
Graphite is one of the three isomers of the chemical element carbon; the other two are diamond and amorphous carbon. Graphite crystallizes in a hexagonal system. Carbon atoms are tightly bound together in the form of flakes. Due to the weak bonding between the flakes, graphite shows a low shear strength under friction. Therefore, it can be used as a solid lubricant and has become one of the traditional and main solid lubricating materials.

Oilless Metal Sliding Materials Standard Components for Sliding Material

Oilless Metal Sliding Materials

Oil-Free Bushings, Oilless Washer for industrial applications. bronzelube.com offers free CAD downloads, short lead times, competitive pricing, and small minimum order quantity.

Maintenance free bearing and guide bushes, bronze with solid lubricant, graphite oilless bushes

Oilless Bushes Price and delivery time on request

Description

Graphite Oilless Bushes made of extra hard and resistant bronze with built-in self-lubricating graphite caps for maintenance-free operation. When it comes to high loads and small movements where lubrication is difficult to implement, this Graphite Oilless Bushes is an excellent solution. Graphite plugs cover approximately 25-30% of the Graphite Oilless Bushes surface and are positioned so that the entire Oilless Bushes bearing surface is always lubricated. Graphite Oilless Bushes are available in many designs and can also be manufactured in other alloys to meet specific application needs.

Feature

• Periodic lubrication is not required.
• Anti-seizure properties. It can work in the absence of lubrication / lubrication faults.
• Exceptional wear resistance.
• Excellent incorporability of foreign particles.
• Reduction of the noise level.
• It can also be used at high temperatures.
• Suitable for high loads and high speeds.
• The products are not contaminated with oil.
• Cost effective.
• It can be replaced for sintered bronze
• Reduction of management costs.
• Reduction of maintenance costs.
• Compact design.
• Longer working life.
• Remarkable resistance to corrosion and chemical attacks.

Self-Lubricating Oilless range of Bushes, Bush Bearings, Flanged, Liners & Wear Plates, etc

Bearing forms available in standard dimensions

• Cylindrical bushes
• Flanged bushes
• Thrust washers
• Flanged washers
• Sliding plates

Metric bearings and imperial bushes on request: standard bush shapes in special dimensions, half bushes, special shapes by stamping or deep drawing, customer-specific bush designs

Choose Your Graphite Oilless Bushes Style

Self Lubricating Bushing – High-Quality Factory Oilless Bushes Standard slide bearing

Oilless Bushes Characteristics

– Maintenance free (self-lubricating)
– Suitable for heavy duty applications
– Resists extreme temperatures
– Long lifespan

Oilless Bushes Technical Data

Oilless Bushes Physical properties

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Self-Lubricating Oilless Bushes Graphite Plugged Bronze Sleeve Bushings Now Available Online

Graphite oilless bushes are a substrate in carbon steel, bronze powder, PTFE, fibers and other materials through a special process for the production of self-lubricating products, with the characteristics of environmental protection.

Material

• Base Copper alloy
• Solid lubricant

Structure

1.Solid lubrication film

2.Solid lubricant

3.Copper alloy substrate

Replacement “SOB”oilless bushes (e.g. Inner diameter d 8mm×Outer diameter D 12mm ×Length L 8mm)

Tolerance

d8 ：General use (high load)
e7 ：General use (light load)
f7 ：High precision

It is written the oilless bushes service range, the test data, and the standard size table, etc.

Oilless bushes feature

1. Oil supply device, oil hole, oil groove
2. Reduction of operating costs
3. Shortened design time
4. Recovery and environmental protection of the lubricant

Graphite Bronze Material Oilless Guide Bushes

Providing Custom Solutions, Catalog Available, ISO 9001:2008 Certified Company

STRAIGHT & FLANGE TYPE

Oilless Bush. Copper Alloy. Straight type. Material Base Copper alloy . Solid lubricant. Lubricant Type. Lubricating Bushes

OILLESS SLEEVE BEARING